Batch Processing from saved Curve

[aKAndrew1234]

I am trying to batch process some files, using the Python console

PHP Code:

GIMP 2.10.2 Python Console
Python 2.7.12 (default, Feb 17 2018, 16:52:07) 
[GCC 6.2.0]
➤> cur = '/home/back-office/.var/app/org.gimp.GIMP/config/GIMP/2.10/curves/26-06-2019'
➤> dir = '/home/back-office/Desktop/Old_Desktop/Desktop/image_works/newimages'
➤> ext = '.JPG'
➤> pdb.python_fu_CurveBatch(dir, ext, cur) 


using this I get an error...

PHP Code:

Curve Warning
/home/back-office/Desktop/Old_Desktop/Desktop/image_works/newimages
don't have files to handle 


Files are located in the folders with upper case .JPG any pointers to what could be going wrong ?